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CN-224204832-U - Stator core, stator assembly, motor assembly and vehicle

CN224204832UCN 224204832 UCN224204832 UCN 224204832UCN-224204832-U

Abstract

The utility model discloses a stator core, a stator assembly, a motor assembly and a vehicle, wherein the stator core comprises a plurality of stator modules, each stator module comprises a stator main body core and a stator tooth shoe, the stator tooth shoes are connected with the stator main body core, a first matching surface is formed on the stator main body core, the first matching surface is a plane, a second matching surface is formed on the stator tooth shoes, the first matching surface extends along a straight line extending in the radial direction of the stator core, and the second matching surface is matched with the first matching surface. According to the stator core, the first matching surface extending along the straight line extending in the radial direction of the stator core is formed on the stator main body core, and is a plane, so that the processing difficulty of the first matching surface is reduced, meanwhile, the production difficulty of the stator main body core is reduced, the accurate alignment between the stator tooth shoes and the stator main body core is facilitated, and the assembly of the stator tooth shoes and the stator main body core is facilitated.

Inventors

  • CHENG FANGZHENG
  • LI WENRUI

Assignees

  • 比亚迪股份有限公司
  • 东莞弗迪动力有限公司

Dates

Publication Date
20260505
Application Date
20250403

Claims (11)

  1. 1. Stator core (100), its characterized in that includes a plurality of stator modules, every stator module all includes stator body core (1) and stator tooth boots (2), stator tooth boots (2) with stator body core (1) link to each other, be formed with first mating surface (13) on stator body core (1), first mating surface (13) are the plane, be formed with second mating surface (21) on stator tooth boots (2), first mating surface (13) are along the straight line extension that extends in the radial direction of stator core (100), second mating surface (21) with second mating surface (21) adaptation.
  2. 2. The stator core (100) according to claim 1, characterized in that the first mating surface (13) is perpendicular to the width direction of the stator body core (1).
  3. 3. The stator core (100) according to claim 2, wherein the stator body core (1) is formed with fitting grooves (12) at both ends in an axial direction of the stator core (100), both sides of the fitting grooves (12) adjacent to each other have an open mouth, the first fitting surface (13) is formed on a side wall of the fitting grooves (12), the second fitting surface (21) is formed on an end face of the stator tooth shoe (2) toward the stator body core (1), and the first fitting surface (13) is fitted with the second fitting surface (21).
  4. 4. A stator core (100) according to claim 3, characterized in that the stator body core (1) is provided with the stator tooth shoes (2) on at least one side in the tangential direction of the stator core (100), the stator body core (1) comprising a plurality of stator core pieces (11).
  5. 5. The stator core (100) according to claim 4, characterized in that a plurality of the stator core pieces (11) are arranged in a radial direction of the stator core (100), and the first mating surface (13) extends in a direction perpendicular to the arrangement direction of the stator core pieces (11).
  6. 6. The stator core (100) according to claim 4, characterized in that a plurality of the stator core pieces (11) are arranged in a width direction of the stator body core (1), and the first mating surface (13) extends in a direction parallel to the arrangement direction of the stator core pieces (11).
  7. 7. The stator core (100) according to claim 4, characterized in that the stator main body core (1) is provided with the stator shoes (2) on both sides in the width direction of the stator main body core (1), the stator shoes (2) located on both sides in the width direction being symmetrically arranged.
  8. 8. A stator assembly comprising a stator winding and a stator core (100) according to any one of claims 1-7, said stator winding being wound on said stator core (100).
  9. 9. An electric machine comprising the stator assembly of claim 8.
  10. 10. An electric motor assembly comprising the electric motor of claim 9.
  11. 11. A vehicle comprising the electric machine assembly of claim 10.

Description

Stator core, stator assembly, motor assembly and vehicle Technical Field The utility model relates to the technical field of vehicle manufacturing, in particular to a stator core, a stator assembly, a motor assembly and a vehicle. Background In the related technology, the name of Chinese patent publication No. CN118017721A is "a yoke-free stator tooth formed by combining a soft magnetic composite material and an oriented silicon steel sheet and a method thereof", the design method of the yoke-free stator tooth formed by combining the soft magnetic composite material and the oriented silicon steel sheet is disclosed, a stator tooth part is formed by laminating a plurality of oriented silicon steel sheets along a radial direction, a stator tooth shoe part is made of the soft magnetic composite material, and the problem that when the torque density of a yoke-free segmented stator axial flux motor is improved by adopting the oriented silicon steel sheets as stator cores, the stator tooth shoe area is influenced by low saturation magnetic density in the shearing direction of the oriented silicon steel sheets, so that the leakage magnetic of the motor is increased, the main magnetic flux is reduced, and the torque of the motor is reduced is solved. However, the stator tooth shoe and the stator core main body are matched by adopting key grooves, so that the processing difficulty is high and the matching precision requirement is high. In short, the invention effectively improves the torque density of the motor through the combination of the soft magnetic composite material and the oriented silicon steel sheet, and solves the problems of magnetic flux leakage increase and main magnetic flux reduction caused by low saturation magnetic density in the shearing direction of the oriented silicon steel sheet in the stator tooth shoe region, but the key slot matching mode between the stator tooth shoe and the stator core main body has certain limitation in the design, the processing difficulty is higher, and the requirement on the matching precision is higher, so that the manufacturing cost and the process complexity can be increased. Disclosure of Invention The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide the stator core which is low in processing difficulty, low in matching precision, low in production cost and low in process complexity. The utility model further provides a stator assembly with the stator core. The utility model also provides a motor with the stator assembly. The utility model further provides a motor assembly with the motor. The utility model further provides a vehicle with the motor assembly. The stator core according to the first aspect of the utility model comprises a plurality of stator modules, each stator module comprises a stator main body core and a stator tooth shoe, the stator tooth shoe is connected with the stator main body core, a first matching surface is formed on the stator main body core and is a plane, a second matching surface is formed on the stator tooth shoe, the first matching surface extends along a straight line extending in the radial direction of the stator core, and the second matching surface is matched with the second matching surface. According to the stator core, the first matching surface extending along the straight line extending in the radial direction of the stator core is formed on the stator main body core and is a plane, so that the processing difficulty of the first matching surface is reduced, meanwhile, the production difficulty of the stator main body core is reduced, the production efficiency of a stator module is improved, the production quality of the stator main body core can be guaranteed due to low processing difficulty, the production precision of the stator tooth shoe and the stator main body core is improved, the accurate alignment between the stator tooth shoe and the stator main body core is guaranteed, the production cost is reduced, the first matching surface and the second matching surface can be closely attached, the air gap is reduced, the transmission efficiency of magnetic flux is improved, and the overall efficiency and the performance of the motor are enhanced. In some possible embodiments, the first mating surface is perpendicular to a width direction of the stator body core. In some possible embodiments, the stator main body core is formed with an assembly groove at two ends in an axial direction of the stator core, two adjacent sides of the assembly groove are provided with open openings, the first mating surface is formed on a side wall of the assembly groove, the second mating surface is formed on an end face of the stator tooth shoe facing the stator main body core, and the first mating surface is attached to the second mating surface. In some possible embodiments, the stator body core is provided with the stator tooth shoes on at lea